When you're snapping photos of the family on vacation with your digital camera, the last thing on your mind is how much space you have on your memory card--which can lead to serious disappointment when the camera's "no vacancy" sign lights up.

Keep small groups of people entertained on this summer's road trip with the Belkin Rockstar Multi Headphone Splitter.

This interesting splitter allows up to five people listen in to the same music from an MP3 player at the same time. It also works with DVD players--helpful if parents want to drive in peace and let the kids listen to the Lion King for the hundredth time on their own private headphones.

If you’re tired of relying on shaky public Wi-Fi, take matters into your own hands with this Belkin Wireless Dual Band Travel Router.

Perfect for a hotel room or a coffee shop with slow bandwidth, this router lets you create your own high speed Wi-Fi connection for privately connecting all your devices. It also fits into a small travel bag so it's easy to carry with you.

A vacation can be the most frustrating time to have your devices run out of juice. The Freeloader Pico Solar Charger allows you to charge your devices when you can't get to an outlet.

First you charge the Freeloader (warning: the device takes between 3 and 10 hours to charge completely). Then it transfers that power (in just 30 minutes or so) to your phone, iPod, GPS, or other device.

When the weather takes a turn for the worse, you'll be glad you have a way to entertain everyone who's stuck indoors at Grandma's house--and the only thing Grandma has to supply is Wi-Fi.

Using the Wi-Fi, the Roku 2 XS can stream dozens of Internet video services, including Netflix and Hulu Plus, to most high-definition and standard-definition TVs. It also includes a cool motion controller for gaming, and it comes with Angry Birds preloaded. Let's just hope that, its name notwithstanding, it doesn't "rock you to excess."

If you have the cash to spend, the BladeFish Seajet could be the ultimate companion for your family's next snorkeling adventure.

The Seajet propels you at a modest 2.5 mph--fast enough for a leisurely (and relatively effortless) tour of a coral reef. BladeFish says that the charge on this lightweight rechargeable sea scooter lasts for up to 40 minutes.

Work has a way of finding you, even when you're on vacation. If you occasionally have to print something out while traveling, you may find the SiPix Pocket Printer A6 quite useful.

The A6 uses thermal printing technology to print documents without using any ink. Just make sure that you have the A6 and some sheets of SiPix thermal paper ($5 for 100 sheets) with you, and you'll be all set.

GasBuddy: Available free for iOS and Android, this app uses a live database of gas prices to help you find the cheapest place near you to fill your tank.

iExit: Want to know what's at the end of an off-ramp before you get there? The iExit Interstate Exit Guide app, available for $1 for iOS (for a limited time at this price) and free (for a limited time) for Android, lets you check to see what restaurants, stores, and restrooms are at each exit ahead of you, so you can plan your trip accordingly.

iOnRoad: Available for free for Android devices, this driver safety app monitors the road and warns you if you get too close to the vehicle ahead of you. Perfect for overnight drives when the rest of the family is fast asleep.